1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ca65adcdb0df70c404b2d02718b92f22b89471168bd79a08d83f5cbf8023e8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8be199cf-808f-47fe-be07-60c504528579.json and https://artists.proofprofile.net/proofs/artist/8be199cf-808f-47fe-be07-60c504528579.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9db1f4e96568c5ce768cdcf46d16b22f3f5a93a3a0c09f0f0d7f28726cd3a01. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22D2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bde31bb83e3c3b577e62ef1f20834516046be6ec569d9e6d5e28d90d015089b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMTD2100269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02232520eebd8f04f2b95f5bcfe7f10c9ebb82f865f6e3d9dd4d0c0b7f014e7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R70810017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ebb1ce44fd281ef68de64b92b88db4f6fa964091c39ceed641aff05e48eef8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B1514134.
Last Night I Rocked The Room Like Elvis And Had Them Laughing Like Richard Pryor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfc66427b59eacdb73c44ddf212d08a24f4a7ff9aca67f18c9c84ef2c028179. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B1514137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f6d7e55c298596ed7265def28ed4ed179e29fa87106dd5e25250b8c08cbaf3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B1514142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c791d31aabbd79bb3012ffb7c648f0f7dff36f5fcfe0401c7c6b3c4666c0626. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B1514143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c84c4f77cf3d4bc94a6b309ac530ed619ee3687e1646c9e1275382386b712d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B1514136.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b269841923c2c34af02d417eb56cc0ee6605746d6991a05f33a38db49b0688c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R70810018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebf89c168e97498a724f447b1a87b9823ee13d1f2931e4eecf5a220b1386788. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B1514135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc4b0825033c3ab7249ac1b715bb152330362fc20ee274282df834f7cd8c24b. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B1514138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2118bb61988134d6455be4cfd79aa3f02f8d2ebabe47bdd48cb469df9ae7122d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B1514139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6a4eefe2773befea968d24b3572ffcdbb80d8e9f4893fb5300e18f26267835. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B1514140.
America's Most Wanted Mark Kozelek And John Dillinger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8087bc6f00166709ca7c070b4a28af27d8e386b9ecb67a43f629dadab2401ece. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B1514141.
The Greatest Conversation Ever in the History of the Universe (30 Days, 30 Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc95ee4d8a81410f6c8eebb765735fa90abed43eec2fd309a230296b1c49c76. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81656768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271353abb1d0edb1cc123459347915dbcf4ce66d2239667c92c17e6e58248901. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZMA1400062.
Perfect As Cats: The Songs of The Cure (15th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfeccf563fbd66dfed11c29cf4cc9182856cbd64da5173b7647499223da45b6. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHLW0910267.